EP1143763A1 - Dispositif de terminaison de réseau et méthode de filtrage de signaux - Google Patents

Dispositif de terminaison de réseau et méthode de filtrage de signaux Download PDF

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Publication number
EP1143763A1
EP1143763A1 EP01440041A EP01440041A EP1143763A1 EP 1143763 A1 EP1143763 A1 EP 1143763A1 EP 01440041 A EP01440041 A EP 01440041A EP 01440041 A EP01440041 A EP 01440041A EP 1143763 A1 EP1143763 A1 EP 1143763A1
Authority
EP
European Patent Office
Prior art keywords
isdn
signal component
component
filter
signal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP01440041A
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German (de)
English (en)
Inventor
Bagher Aschrafi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alcatel CIT SA
Alcatel Lucent SAS
Original Assignee
Alcatel CIT SA
Alcatel SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alcatel CIT SA, Alcatel SA filed Critical Alcatel CIT SA
Publication of EP1143763A1 publication Critical patent/EP1143763A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
    • H04Q11/0428—Integrated services digital network, i.e. systems for transmission of different types of digitised signals, e.g. speech, data, telecentral, television signals
    • H04Q11/0435—Details
    • H04Q11/0471—Terminal access circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
    • H04M11/062—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors using different frequency bands for speech and other data

Definitions

  • the invention relates to a network termination device according to the Preamble of claim 1, a method for filtering signals according to the preamble of claim 7 and a device according to the preamble of claim 10.
  • DSL digital subscriber Line
  • a subscriber receives a digital access with a data rate in the megabit range. This is especially for the connection to the Internet cheap, because the download of information, often pictures include, is accelerated.
  • X stands for example for A, S, H or V, where A Asynchronous, S Synchron, H High bitrate and V Very high bitrate means.
  • an ADSL modem is installed at the subscriber, through which he has access to various services.
  • the ISDN serves e.g. to digital phone signals and / or digital To transmit videophone signals.
  • the POTS serves analog Transmit phone signals.
  • a participant who has only one had analog phone line, can connect with ADSL upgrade in such a way that he can continue to make analog calls at the same time but can now surf the Internet.
  • ISDN In order to transmit voice via ADSL in particular, ISDN is used or POTS used. Either ISDN or POTS are used simultaneously Transfer ADSL to a subscriber. ISDN and POTS are combined in one first frequency range, ADSL in a second frequency range transfer. The two frequency ranges do not overlap. It will be one Device needed that both ISDN and POTS signals among themselves also separates from the XDSL signals. Usually a POTS filter and an ISDN filter is used. Both with ISDN and with POTS DC components are also transmitted for the purpose of remote supply. Due to the DC components used to build the filter Coils needed in the longitudinal branches. The coils are expensive, they are high Requirements have to meet.
  • the invention discloses a network termination device according to Claim 1, a method for filtering signals according to Claim 7 and a device according to claim 10.
  • the invention provides in particular a device that a Including switch to separate a received signal mixture a signal component and a DC component and one Processing device for processing the signal component includes.
  • the device is designed in particular as an ISDN network termination device including a switch to separate one received signal mixture containing an ISDN signal component and an ISDN DC component and processing device for processing the ISDN signal component.
  • Between switch and An ISDN filter is connected to the processing device. From two in the booth the components required in technology, namely an external filter and one commercial network termination facility, both an external Power supply will require a new network termination facility created, in which the filter property is integrated. This will make the Manufacturing costs and installation costs are seared. The Manufacturing costs can be reduced by 60% because the filter is now on the existing board can be integrated, so that the housing the new network termination device in size not from the housing a commercially available network termination facility.
  • the DC component of the remote supply is from the actual User information signals for ISDN separated, e.g. using a Capacitor, and forwarded via a separate path as well as to Power supply used for the internal components of the facility.
  • the too filtering signals no longer contain a DC component, i.e. no DC offset.
  • Capacitors have smaller dimensions than coils, are cheaper and easier to install. Are capacitors can also be integrated into an integrated circuit. The filters are thus cheaper.
  • the filters can be designed as passive components, which can save electricity.
  • the filters can also be active Components, e.g. using thyristors.
  • ADSL or SDSL or XDSL
  • ISDN enables.
  • the invention also provides a method for filtering first signals from signal mixtures comprising a first signal component and a first associated DC component and a second Signal component that is characterized in that the first first signal component and the first DC component of a received signal mixture are separated from each other that the first signal component is fed to a certain filter, and that then the filtered signal component is processed further.
  • the first signal component contains, for example, a digital one Telephone signal component (e.g. ISDN), the first DC component an associated DC component and the second signal component a digital data signal component (e.g. XDSL).
  • a digital one Telephone signal component e.g. ISDN
  • the first DC component an associated DC component
  • a digital data signal component e.g. XDSL
  • the invention is therefore not based on the integration of ADSL and ISDN or POTS limited, but can in particular be transferred to all systems in which there is a separation between at least two different information signals, at least one together transmitted with a DC component must be done.
  • Fig. 1 shows a section of a communication network for transmission from ADSL and ISDN / POTS.
  • the communication network is a common one Telephone network, which is a point-to-point exchange Connections to individual participants exist. Participants can be both ISDN and POTS customers.
  • the communication network thus supports both the old analog connections and the digital ISDN connections.
  • the communication network is also ADSL-capable made. Every ADSL customer has an ADSL modem 5, via which the ADSL traffic is handled, e.g. Internet access. Via a line 4 between the exchange and a subscriber At the same time two services are offered ADSL and ISDN or ADSL and POTS.
  • a device 3 on the switching side and a device 6 on The subscriber side ensures filtering of the ISDN or POTS signals.
  • the participant in the example is an ADSL and ISDN customer. He has an ADSL Modem 5 for the ADSL services. It has a device 6 for filtering the ISDN signals from that received by the exchange Signal mixture including ADSL signals, ISDN signals and ISDN DC components.
  • the output signals of the device 6 contain only ISDN signals (SO interface) on the subscriber side, but no more ADSL signals.
  • the device 6 thus provides a Network termination device with integrated filter function that in particular, they are used in networks in which except ISDN Additional services are offered to signals, e.g. XDSL that are usually transmitted in a different frequency range that the ISDN signals can be separated using a filter.
  • An application of the device 6 is also conceivable in Cable television distribution networks, which are upgraded by means of a return channel, so that besides the distribution of television signals also communicative Services such as ISDN can be offered as an overlay. Also in Power Line networks in which the ISDN signals are separated at the subscriber the device 6 can be used.
  • To the Device 6 can be connected to up to eight terminals 7, e.g. an ISDN telephone, a fax machine, a videophone, etc.
  • the one Participants transmit ADSL information to the exchange, e.g. Polling signals are sent via an ADSL module 1 to the telephone network independent network, e.g. to a service provider that has a Provides internet access. That from a subscriber to the exchange transmitted ISDN information, e.g. Telephone signals get through the Device 3, which hides all ADSL signals and the ISDN signals filtered forwards to an ISDN module 2 and from there to the ISDN network.
  • ISDN e.g. Telephone signals
  • the combination can also ADSL and POTS are used.
  • module 2 is a POTS module and the device 6 a POTS network termination with an integrated filter function. POTS devices, e.g. analog phones, used.
  • Fig. 2 shows an inventive device for filtering ISDN.
  • the device corresponds to the device 6 from FIG. 1.
  • the devices 3 and 6 from Fig. 1 are similar in structure with the difference that in the Device 6 additionally a module for providing an SO interface is present and in the device 3 the feed of DC component takes place and in the device 6 DC component is received, so that on a detailed Description of the device 3 is dispensed with.
  • Both for the combination ADSL and ISDN as well as ADSL and POTS can devices 3 and 6 can be used. They can therefore be used universally.
  • Device 6 includes a series connection of a switch 8, one Filter 9, a processing device 10, a module 11 for Provision of a U interface and a module 12 for provision of a SO interface.
  • the device 6 further includes a DC / DC converter 13.
  • Turnout 8 includes a transformer that is out a primary side and a secondary side is constructed.
  • the primary side includes a series connection of a first coil, a capacitor and a second coil, the DC component between the Capacitor and the first coil and between the capacitor and the second coil is tapped.
  • the secondary side includes one Series connection of a third and fourth coil.
  • the transmitter serves for electrical isolation, which minimizes interference.
  • the ISDN signal component changes from the primary side to the secondary side transferred and fed to the filter 9.
  • the ISDN DC component is tapped on the primary side and via separate lines to the Transfer DC / DC converter 13, i.e. in particular, it is not about that Transfer filter 9.
  • the filter 9 contains an ISDN filter which e.g. be designed as a low pass can.
  • the low pass has e.g. a cut-off frequency of 60 MHz.
  • the filter 9 has the task of receiving the ISDN signal components Select signal mixture and forward it. All signal components below the cutoff frequency are forwarded; these are with one XDSL / ISDN customers the ISDN signals. All signal components above the cutoff frequency will not be forwarded; these are with one XDSL / ISDN customers the XDSL signals.
  • the XDSL signals arrive at XDSL modem in which they are processed.
  • DC / DC converter 13 is used to provide the supply voltage for the filter 9 from the remote supply voltage. Part of the ISDN DC component is converted to DC / DC, e.g. from 100 volts in 5 Volt and fed to the ISDN filter.
  • the filter 9 can also be used as a passive Filter designed, then no supply is required.
  • DC / DC converter 13 also feeds the components 10, 11, 12.
  • the ISDN signal components filtered in filter 9 are the Processing device 10 supplied, in which a first evaluation takes place.
  • the processing device includes, for example, a processor, a memory, an equalizer, an encoder, a compressor, one Decoder, a decompressor, etc.
  • module 11 a Protocol adaptation carried out in such a way that a standardized ISDN-U interface can be made available.
  • module 12 a Protocol adaptation carried out in such a way that a standardized ISDN S0 interface can be provided as an interface to serves the ISDN terminals.
  • a detector can be integrated into the DC / DC converter 13.
  • the detector's job is to determine what voltage across the Remote power is transmitted. ISDN signals are common transmitted together with a supply voltage of approx. 100 volts.
  • the detector is designed, for example, as a threshold detector.
  • the Threshold is e.g. at 95 volts. Only when a supply voltage is detected the DC / DC converter and thus the entire Network termination facility activated. This saves electricity.
  • Fig. 3 shows an embodiment of the filter 9 according to the invention from Fig. 2.
  • Das Filter 9 contains an ISDN filter.
  • the ISDN filter has one in the longitudinal branch Series connection from three LC elements. Each LC element contains one Parallel connection from a coil and a capacitor. There are four Proceed cross branches, each containing a capacitor. The values of capacitors and coils are chosen so that they Filter property specified for the transmission of the ISDN signals Can perform frequency range optimized.
  • the ISDN filter can also designed as a dual or equivalent circuit to the above configuration his.
  • the switch includes a transformer.
  • a transformer can also be used for galvanic isolation, an opto-coupler or a gyrator can be used.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Telephonic Communication Services (AREA)
  • Telephone Function (AREA)
EP01440041A 2000-03-09 2001-02-22 Dispositif de terminaison de réseau et méthode de filtrage de signaux Withdrawn EP1143763A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10011121A DE10011121A1 (de) 2000-03-09 2000-03-09 Netzabschlusseinrichtung und Verfahren zum Filtern von Signalen
DE10011121 2000-03-09

Publications (1)

Publication Number Publication Date
EP1143763A1 true EP1143763A1 (fr) 2001-10-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP01440041A Withdrawn EP1143763A1 (fr) 2000-03-09 2001-02-22 Dispositif de terminaison de réseau et méthode de filtrage de signaux

Country Status (6)

Country Link
US (1) US20010021249A1 (fr)
EP (1) EP1143763A1 (fr)
JP (1) JP2001313710A (fr)
DE (1) DE10011121A1 (fr)
IL (1) IL141475A0 (fr)
SG (1) SG118069A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10248471A1 (de) 2002-10-17 2004-05-06 Infineon Technologies Ag Übertrager-Schaltungsanordnung
CA2559133C (fr) * 2006-09-08 2011-10-25 Bce Inc Appareil et systeme pour commander le filtrage de signaux
TR200701851A2 (tr) * 2007-03-22 2008-09-22 Ai̇rti̇es Kablosuz İleti̇şi̇m San. Ve Diş Ti̇c. A.Ş. PSTN (analog telefon şebekesi) ve ISDN (dijital telefon şebekesi) üzerinden DSL (sayısal abone hattı) bağlantısı kurabilen evrensel DSL modem
EP2148472B1 (fr) 2008-07-24 2015-09-16 Yello NetCom GmbH Module de raccordement pour un réseau, procédé de mise en réseau de pièces et groupe de conteneurs doté de conteneurs mis en réseau

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0760587A1 (fr) * 1995-08-25 1997-03-05 Siemens Aktiengesellschaft Terminal radio utilisant un réseau hybride coax-fibre à large bande
EP0778683A2 (fr) * 1995-12-04 1997-06-11 Fujitsu Limited Equipement terminal pour télécommunication et pour traitement d'information
WO1999051019A1 (fr) * 1998-04-01 1999-10-07 Tyco Electronics Corporation Reseau d'acces a coupleur reception integre
WO1999065217A1 (fr) * 1998-06-10 1999-12-16 Nokia Networks Oy Procede de separation de services en bande etroite et en bande large dans un lien de transmission et element separateur
DE29914706U1 (de) * 1999-08-21 2000-01-27 Siemens Ag Leitungsabschlußvorrichtung für eine Teilnehmeranschlußleitung

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3828272A1 (de) * 1988-08-19 1990-03-01 Siemens Ag Anordnung zum uebertragen von daten und einer versorgungsspannung ueber eine busleitung
US5148144A (en) * 1991-03-28 1992-09-15 Echelon Systems Corporation Data communication network providing power and message information
US5623543A (en) * 1994-02-01 1997-04-22 British Telecommunications Public Limited Company Two port signalling voltages filter arrangement
AT406103B (de) * 1996-07-03 2000-02-25 Ericsson Austria Ag Nachrichtenübertragungssystem
US5781728A (en) * 1996-03-15 1998-07-14 Motorola Inc. Flexible asymmetrical digital subscriber line ADSL transmitter, remote terminal using same, and method therefor
DE29607357U1 (de) * 1996-04-23 1996-06-20 Siemens AG, 80333 München Übertragungssystem mit hochbitratigen Digitalsignalkanälen und einem konventionellen Telefoniekanal auf symmetrischen Cu-Doppelader-Leitungen
IL121643A (en) * 1997-08-27 2000-07-16 Eci Telecom Ltd Apparatus and method for concurrent voice and data transmission
US6584079B1 (en) * 1999-04-15 2003-06-24 Advanced Micro Devices, Inc. Apparatus and method of implementing a home network by filtering ISDN-based signals within the customer premises

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0760587A1 (fr) * 1995-08-25 1997-03-05 Siemens Aktiengesellschaft Terminal radio utilisant un réseau hybride coax-fibre à large bande
EP0778683A2 (fr) * 1995-12-04 1997-06-11 Fujitsu Limited Equipement terminal pour télécommunication et pour traitement d'information
WO1999051019A1 (fr) * 1998-04-01 1999-10-07 Tyco Electronics Corporation Reseau d'acces a coupleur reception integre
WO1999065217A1 (fr) * 1998-06-10 1999-12-16 Nokia Networks Oy Procede de separation de services en bande etroite et en bande large dans un lien de transmission et element separateur
DE29914706U1 (de) * 1999-08-21 2000-01-27 Siemens Ag Leitungsabschlußvorrichtung für eine Teilnehmeranschlußleitung

Also Published As

Publication number Publication date
US20010021249A1 (en) 2001-09-13
JP2001313710A (ja) 2001-11-09
SG118069A1 (en) 2006-01-27
DE10011121A1 (de) 2001-09-27
IL141475A0 (en) 2002-03-10

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